Have a look at the Bid History guys - the winning bidder has a 100% history with this seller. I'm not saying it's bogus, but if it looks like and smells like it, then it usually is. I'd expect they were pushing the bids up to lure in someone who might not know their stuff.
I withdraw from bidding when you see other winning bidders have a very low number of purchasers made and a big percentage of the bidding is done with that seller.